Police say the attacks happened between May 12 and May 15, striking first on East 18th Street then jumping around three more times and finally robbing a 5th woman on Wall Street.

In each case, police say the attacker targeted women in their mid 20s or early 30s.

The say he is unpredictable, sometimes preying on his victims late at night, sometimes as early as 1am and twice, in the mid-morning.

“I hope the police get more active then and be outside a little more,” said Grammercy resident Michelle Spiezia.

The attacks haven’t all been clustered in the same neighborhood but they do have something in common. All are near subway stations.

“That’s something you do not want to hear on the way to work,” saidValley Stream resident Laura Vasquez.

“I usually don’t really pay attentiong because it’s so secure around here,” Taboaba said. “I’m going to be more careful now.”

Police didn’t have the name of the suspect, and only grainy pictures to go on, but they’re hoping that will be enough to catch the suspect before he strikes again.

Anyone with information is asked to call Crime Stoppers at 1-800-577-TIPS (8477). Tips can also be submitted on the Crime Stoppers website or by texting their tips to 274637 (CRIMES) then entering TIP577.